Now showing items 1-10 of 902
Physical and Chemical treatments on Chitosan Matrix to modify film properties and kinetics of biodegradation
(Science and Education Publishing, 2013-11)
This work was focused on analyzing the effect produced by the addition of tannic acid as a crosslinking agent of chitosan matrix and the influence of the heat treatment applied. Taking into account those aspects relevant ...
Impact of chemical agents for surface treatments on microhardness and flexural strength of root dentin
(Sociedade Brasileira de Pesquisa Odontológica - SBPqO, 2014)
This study assessed the cross-sectional Knoop microhardness and flexural strength of root dentin exposed to different surface treatments with chemical agents after biomechanical preparation. Root canals from human canines ...
Constructed wetland in wastewater treatment
Physical and chemical variables of soil and water were measured to determine the effectiveness of a constructed wetland for wastewater treatment. Eight different macrophyte species, namely Eichhornia crassipes, Alternanthera ...
Functional modifications by physical treatments of dietary fibers used in food formulations
Chemical modifications of polysaccharides for food and non-food applications have been practiced for years to improve their functional properties. Recent concerns from the public to reduce the use and exposure of chemicals ...
VIABILITY of SPORULATED OOCYSTS of NEOSPORA CANINUM AFTER EXPOSURE TO DIFFERENT PHYSICAL and CHEMICAL TREATMENTS
(Amer Soc Parasitologists, 2011-02-01)
The aim of the present study was to evaluate the viability of Neospora caninum sporulated oocysts after various chemical and physical treatments. Bioassays in gerbils and molecular techniques (PCR-RFLP) were used for ...
Effect of chemical treatment on the mechanical properties, water vapour permeability and sorption isotherms of gelatin-based films
(JOHN WILEY & SONS LTD, 2008)
Proteins contain hydrophilic groups, which can bind to water molecules through hydrogen bridges, resulting in water vapour adsorption. An increase in the degree of cross-linking can be a method to improve the cohesiveness ...
Otimização de processos físico-químicos na remoção de fósforo de esgotos sanitários por processos de precipitação química com cloreto férrico
Tendo em vista a potencialidade do emprego de processos de coagulação química no tratamento de esgotos, este trabalho teve por objetivo estudar a remoção de fósforo em efluentes de sistemas anaeróbios e aeróbios de tratamento ...
EFFECT OF THE CHEMICAL TREATMENT ON THE MECHANICAL PROPERTIES, WATER VAPOR PERMEABILITY AND SORPTION ISOTHERMS OF GELATIN-BASED FILMS
(Chiriotti EditoriPineroloItália, 2007)